Home / 78,889,402.05-118,334,101.26-21,381,672.08

Finding the Fourth Proportional to 78,889,402.05, 118,334,101.26 and 21,381,672.08

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Solution

The fourth proportional to 78,889,402.05, 118,334,101.26 and 21,381,672.08 is: 32,072,507.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,889,402.05 : 118,334,101.26 = 21,381,672.08 : x
  2. Step 2: Convert to fraction form
    78,889,402.05/118,334,101.26 = 21,381,672.08/x
  3. Step 3: Cross multiply
    78,889,402.05x = 118,334,101.26 × 21,381,672.08
  4. Step 4: Simplify right side
    78,889,402.05x = 2,530,180,948,431,164.50
  5. Step 5: Solve for x
    x = 2,530,180,948,431,164.50/78,889,402.05
  6. Step 6: Final answer
    x = 32,072,507.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.